- magnesium atomPositive and negative results2 papers: 1 positive, 1 negative or no effect
- iron(2+) sulfate (anhydrous)Results agree7 papers: 7 positive, 0 negative or no effect
- zinc atomResults agree6 papers: 6 positive, 0 negative or no effect
- zinc sulfateResults agree4 papers: 4 positive, 0 negative or no effect
- boraxResults agree3 papers: 3 positive, 0 negative or no effect
- PretilachlorResults agree2 papers: 2 positive, 0 negative or no effect
- bispyribac-sodiumResults agree2 papers: 2 positive, 0 negative or no effect
- fertilizationPositive and negative results52 papers: 51 positive, 1 negative or no effect
- applicationPositive and negative results18 papers: 17 positive, 1 negative or no effect
- phosphorusPositive and negative results12 papers: 9 positive, 3 negative or no effect
- nitrogenPositive and negative results11 papers: 9 positive, 2 negative or no effect
- potassiumPositive and negative results7 papers: 4 positive, 3 negative or no effect
- droughtPositive and negative results4 papers: 2 positive, 2 negative or no effect
- stagePositive and negative results3 papers: 2 positive, 1 negative or no effect
- processingPositive and negative results2 papers: 1 positive, 1 negative or no effect
- seed treatmentPositive and negative results2 papers: 1 positive, 1 negative or no effect
- inoculationResults agree5 papers: 5 positive, 0 negative or no effect
- tillageResults agree4 papers: 4 positive, 0 negative or no effect
- limeResults agree3 papers: 3 positive, 0 negative or no effect
- mycorrhizaResults agree3 papers: 3 positive, 0 negative or no effect
- organicResults agree3 papers: 3 positive, 0 negative or no effect
- densityResults agree2 papers: 2 positive, 0 negative or no effect
- herbicideResults agree2 papers: 2 positive, 0 negative or no effect
- nanoparticleResults agree2 papers: 2 positive, 0 negative or no effect
- soil waterResults agree2 papers: 0 positive, 2 negative or no effect
Claims are grouped by organism, treatment and what was measured or targeted. Claims that compare genotypes are left out; a claim about lacking a nutrient counts the other way round in that nutrient’s question. “Results differ” marks a question where two model reviewers, reading both claims, accepted at least one pair of papers whose results differ.